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Steve Roth's avatar

Sounds amazing. I'd be v interested to see any materials on Tim Kohler's topic, if they're available. (I've spent some time with his 2018 book.)

(Modern econ models are constructed such that even extreme wealth concentration really *can't* have any significant negative impact on economic growth. I've done some modeling work based on different constructs, suggesting quite otherwise.)

Peter Turchin's avatar

Here’s a bunch of references for you:

Kohler, T. A., D. Bird, and D. H. Wolpert. 2022. Social Scale and Collective Computation: Does Information Processing Limit Rate of Growth in Scale? Journal of Social Computing 3:1-17.

Kohler, T. A., A. Bogaard, and S. G. Ortman. 2025. Introducing the Special Feature on housing differences and inequality over the very long term. Proceedings of the National Academy of Sciences 122:e2401989122.

Kohler, T. A., A. Bogaard, S. G. Ortman, E. R. Crema, S. Chirikure, P. Cruz, A. Green, T. Kerig, M. D. McCoy, J. Munson, C. Petrie, A. E. Thompson, J. Birch, G. Cervantes Quequezana, G. M. Feinman, M. Fochesato, D. Gronenborn, H. Hamerow, G. Jin, D. Lawrence, P. B. Roscoe, E. Rosenstock, G. K. Erny, H. Kim, R. Ohlrau, J. W. Hanson, L. Fargher Navarro, and M. Pailes. 2025. Economic inequality is fueled by population scale, land-limited production, and settlement hierarchies across the archaeological record. Proceedings of the National Academy of Sciences 122:e2400691122.

Kohler, T. A., S. Cole, and S. Ciupe. 2009. Population and Warfare: a Test of the Turchin model in Pueblo Societies. Pages 277-295 in S. Shennan, editor. Pattern and Process in Cultural Evolution. University of California Press, Berkeley.

Kohler, T. A., L. J. Ellyson, and R. K. Bocinsky. 2019. Beyond One-Shot Hypotheses: Explaining Three Increasingly Large Collapses in the Northern Pueblo Southwest.in F. Riede and P. Sheets, editors. Catastrophes in Context.

Kohler, T. A., A. Green, and S. G. Ortman. 2025. Kuznets at -7000: Is there a really long-term relationship between growth and inequality? Preprint.

Kohler, T. A., M. E. Smith, A. Bogaard, G. M. Feinman, C. E. Peterson, A. Betzenhauser, M. Pailes, E. C. Stone, A. Marie Prentiss, T. J. Dennehy, L. J. Ellyson, L. M. Nicholas, R. K. Faulseit, A. Styring, J. Whitlam, M. Fochesato, T. A. Foor, and S. Bowles. 2017. Greater post-Neolithic wealth disparities in Eurasia than in North America and Mesoamerica. Nature 551:619.

Steve Roth's avatar

Thanks. I've poked around in his earlier work. (Remember I'm just an interested amateur...) The specific causal discussion Wealth Concentration -> economic growth-rate just happens to be right in the center of my interest/research-bullseye...

Swami's avatar

This is amazing.

Stephen Riddell's avatar

That is really cool Peter, thanks for sharing! It has been a long time since I've been at a serious symposium, but that presentation format seemed really intriguing.

UBERSOY's avatar

Powerful lecture.